I can't see how he is happy, the hype had perverted his expectations to something that was not realistic. His own hype and media attention I'm sure scared away others, i.e., is he more dedicated to his football craft or marketing his image.
Not only going so late in the draft but also because he went to the browns. I'm sure if he thought he'd sink to near the bottom of the first round, he would have not entered the draft but his handlers I'm sure convinced him as a heisman trophy winner he'd be #1 or near the top. ESPN loves to hype things and he was their current favorite so that didn't help matters
I will say this is good news for the browns fans, but almost surely creates a QB controversy. The fans will want to see him play immediately, though he's probably better suited to learning the offense and getting prepared for playing the NFL - just my $.02